Bay seniors with cosmic inclinations are invited to view the stars from high atop Mt. Tamalpais courtesy of the Mt. Tam Astronomy Program. It takes place every Saturday between the new and first quarter moons through the end of October. The program is held in the Mountain Theater conducted by professional space scientists. After a 45-minute presentation there is a one hour Star Party led by the San Francisco Amateur Astronomers where you can observe stars, planets and constellations through telescopes. Free.